Full list of all 11 Slime's Journey achievements worth 1,000 gamerscore. It takes around 0.5-1 hour to unlock all of the achievements on Xbox One.
Get the Double Jump Potion.
Get the Enhanced Shooting Rate Potion.
Defeat 150 enemies.
Get the Potion of Swimming.
Get the Potion of Strength.
Defeat 100 enemies.
Get the Big Jump Potion.
Defeat 50 enemies.
Get 1 HP increase potion.
Open 1 treasure chest.
Try new clothes.